23-24高二上·全国·课后作业
解题方法
1 . 已知
的顶点为
,
,
.
(1)求
边上的中线
所在直线的方程;
(2)求
边所在直线的一个方向向量和一个法向量;
(3)求过
中点,且垂直于
方向向量的直线方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80c84818cfbd9a885081cb4e3294eabe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ce7be37ff9418a9c95d5dc54814ebd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e605e2f3342a51de9b4110eef557419.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
(3)求过
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
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23-24高二上·全国·课后作业
解题方法
2 . 写出满足下列条件的直线的方程,并把它化成一般式:
(1)经过点
,倾斜角是直线
的倾斜角的2倍;
(2)经过两点
,
;
(3)经过点
,平行于x轴;
(4)在x轴,y轴上的截距分别为
,
.
(1)经过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/990eaf5dbba84f199bdc438da81fcfa6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/adbba4eaea11a24409e3a22ea70ae468.png)
(2)经过两点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/98b2cc0d2f6d3eee9a33db83e0c0830d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22340d6f2582502d69a5cb85f446ff43.png)
(3)经过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/577620a3b886932bbcf2f2f3dd725d87.png)
(4)在x轴,y轴上的截距分别为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/533a7b702ada1dd80123e4041271d521.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81fb134b2b48acc99213fff6ccfee65f.png)
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23-24高二上·全国·课后作业
解题方法
3 . 已知直线
上的两点
和
.
(1)求直线
的斜率
;
(2)求直线
的方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c179fe7eff7abfdd092b63c9c1b82d0c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89470068f2cfa4229e471c50065c63ad.png)
(1)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
(2)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
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23-24高二上·全国·课后作业
解题方法
4 . 直线
过原点且平分平行四边形
的面积,若此平行四边形的两个顶点为
、
,求直线
的方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8159754fa962579d7dcb79da0ba1908.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/854390524d8a76983fa263094df4a548.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
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23-24高二上·全国·课后作业
5 . 已知过点
的直线
与以点
和
为端点的线段
相交,求直线
的斜率的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1803dc3c76fd2b51696647aa18602412.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50edfb9ed0d50d6f35ad6a130208d307.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/592a85017ea7dbcc771a1856d5724bdd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
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23-24高二上·上海·课后作业
解题方法
6 . 已知
、
、
三点在直线
上.
(1)求实数
的值;
(2)求
的方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de180fcb5d18115f1254369ad9b44b49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff5781110f5bc67ac981b89f5cbe9b07.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9e834fe3857279d0fa1212f7315037f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
(1)求实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
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23-24高二上·上海·课后作业
解题方法
7 . 已知
、
、
三点在直线
上,求
的方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7078a4e8e927c163c7f98e66759c9834.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed776a49a030ffe57d9571edbd15b4bc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba1638f9062220d4cb2b29ec3c135f10.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
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23-24高二上·上海·课后作业
8 . 已知
,求经过
、
两点的直线
的斜率.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bbe14158bb35a3dfe1f083f818c30c5a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/673183ab9d2789bcbc9097b9539b2945.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba434b3223c475f235979baab9d519b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
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9 . 已知
、
、
三点构成一个三角形,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65870361527e54ad78ba737ace3614ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78d4219870c506d0e00064f42f2aef9b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45b0e93fefa6512e8d872d61b8b6be9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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23-24高二上·上海·课后作业
10 . 如图,已知点
、
、
,点
是线段
上任意一点,求直线
的斜率
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86a6be776cdd229e5c1339265b23624a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fb6fd712d967a36c027693a54f91470.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59f56120e30c41aa77a37eb4d46f6390.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e69d2b798744645af88a4fa411344a83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/9/13/7e59c722-28e2-4e3f-8d93-53268c3b9622.png?resizew=146)
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